A116278 n times n+9 gives the concatenation of two numbers m and m-2.

7040, 487249777145, 512750222847, 684330069116

Offset

1,1

Links

Table of n, a(n) for n=1..4.

Example

7040 * 7049 = 4962//4960, where // denotes concatenation.

Crossrefs

Cf. A116147, A116271, A116277, A116284.

Sequence in context: A206757 A236061 A317399 * A206050 A116332 A234545

Adjacent sequences: A116275 A116276 A116277 * A116279 A116280 A116281

Keyword

nonn,base

Author

Giovanni Resta, Feb 06 2006

Status

approved